Hugh Williamson (1735–1819) was an American politician.
Hugh Williamson may also refer to:
- Hugh Ross Williamson (1901–1978), British historian and dramatist
- Hugh D.T. Williamson (1901–1985), Australian banking executive and philanthropist
- Hugh Williamson (book designer) (1918–1992), British book designer and author
- Hugh G. M. Williamson (born 1947), Regius Professor of Hebrew at the University of Oxford
- Hugh Williamson, Europe and Central Asia director at Human Rights Watch.